detroit will retain access to its casino cash. a judge ruled this week that the city can continue to hold on to its gambling tax revenue.detroit's bond insurer had attempted to gain access to the money, arguing that the taxes are considered collateral for other debts. however, a judge says the revenues are protected by u.s. law and cannot be frozen. currently the city rakes in 180 million dollars a year in taxes from its three casinos. groupon is buying a warehouse. and it's viewed as a competitive step toward amazon. the wall street journal reports groupon is building a network of warehouses to store items to sell similar to amazon.but there will be a revolviing selection of goods similar to costco or sams. groupon's core business is selling daily coupons on the internet.groupon's shares have trended higher this summers under new management. groupon is among several companies doing a ceo shuffle this year.a new study shows-- nearly 40% of the top-paid ceos in the u.s. during the last 20 years wound up being fired, fined or bailed